With the exception of those actions named in section
3.3 (CEs for which no formal documentation is required), the decision
to categorically exclude an action from further NEPA analysis is formalized
with the signature of the Park Superintendent or his or her designee on
a CEF (see appendix 2). This form
is attached to the completed ESF form and is the minimum required contents
of a NEPA project file for an action described in section
3.4 of this handbook.